EP1996578A1 - Heterobicyclische carboxamide als kinasehemmer - Google Patents

Heterobicyclische carboxamide als kinasehemmer

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Publication number
EP1996578A1
EP1996578A1 EP07819891A EP07819891A EP1996578A1 EP 1996578 A1 EP1996578 A1 EP 1996578A1 EP 07819891 A EP07819891 A EP 07819891A EP 07819891 A EP07819891 A EP 07819891A EP 1996578 A1 EP1996578 A1 EP 1996578A1
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EP
European Patent Office
Prior art keywords
pyrimidin
yloxy
carboxylic acid
phenyl
amide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07819891A
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English (en)
French (fr)
Inventor
Guido Bold
Andrea Vaupel
Marc Lang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis Pharma GmbH
Novartis AG
Original Assignee
Novartis Pharma GmbH
Novartis AG
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Publication of EP1996578A1 publication Critical patent/EP1996578A1/de
Withdrawn legal-status Critical Current

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    • C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
    • C07D413/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
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    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
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    • C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
    • C07D403/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
    • C—CHEMISTRY; METALLURGY
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    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
    • C07D413/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing three or more hetero rings
    • C—CHEMISTRY; METALLURGY
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    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
    • C07D417/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing three or more hetero rings

Definitions

  • the invention relates to bicyclic heterocyclyl compounds substituted at both rings of formula I and their use in the treatment of the animal or human body, to pharmaceutical compositions comprising a compound of formula I and to the use of a compound of formula I for the preparation of pharmaceutical compositions for use in the treatment of protein kinase dependent diseases, especially of proliferative diseases, such as in particular tumour diseases.
  • PKs Protein kinases
  • PKs are enzymes which catalyze the phosphorylation of specific serine, threonine or tyrosine residues in cellular proteins. These post-translational modifications of substrate proteins act as molecular switch regulating cell proliferation, activation and/or differentiation. Aberrant or excessive wild-type or mutated PK activity has been observed in many disease states including benign and malignant proliferative disorders. In many cases, it has been possible to treat diseases, such as proliferative disorders, by making use of PK inhibitors.
  • the compounds of formula I show inhibition of a number of protein kinases.
  • the compounds of formula I described below in more detail, especially show inhibition of one or more of the following protein kinases: EphB4, c-Abl, Bcr-Abl, c-Kit, Raf kinases such as especially B-Raf, the rearranged during transfection (RET) proto-oncogene, Platelet-derived Growth Factor Receptors (PDGF-Rs), Lck, Hck and most especially the Vascular Endothelial Growth Factor Receptors (VEGF-Rs) such as in particular VEGF-R2.
  • the compounds of formula I further also inhibit mutants of said kinases.
  • the compounds of formula I can be used for the treatment of diseases related to especially aberrant or excessive activity of such types of kinases, especially those mentioned.
  • Structurally related compounds have been described in WO2006/059234
  • the invention especially relates to compounds of the formula I,
  • Ri is H; halo; -C 0 -C 7 -O-R 3 ; -NR 4 R 5 ;
  • R 2 is substituted aryl
  • R 3 is H, lower alkyl or phenyl lower alkyl
  • R 4 and R5 are independently selected from the group consisting of H; unsubstituted or substituted lower alkyl; lower alkoxy-carbonyl and amino;
  • A, B and X are independently selected from C(R 7 ) or N, with the proviso that not more than one of A, B and X is N;
  • R 7 is selected from the group consisting of H, halo and unsubstituted or substituted lower alkyl
  • R 8 is hydrogen or lower alkyl
  • Rg is a substituent
  • n 0, 1 , 2 or 3;
  • Y is O
  • Z is C; W is absent;
  • K is N or C, and either a), if K is C, the bond indicated by the waved line ( ⁇ ) is a double bond, Q is selected from O-N S-N
  • N CH where the left N atom is bound by the bond shown in formula I to K, the right carbon atom (of CH) to C via the bond indicated by the broken line in formula I, with the proviso that said bond indicated by the broken line is a single bond to C; and the bond represented in bold is a double bond; or a tautomer thereof, and/or a (preferably pharmaceutically acceptable) salt thereof.
  • the present invention also relates to a method of treating a kinase dependent and/or proliferative disease comprising administering a compound of the formula I to a warmblooded animal, especially a human, and the use of a compound of the formula I, especially for treating a kinase dependent disease or disorder.
  • the present invention also relates to pharmaceutical preparations comprising a compound of the formula I, especially for the treatment of a kinase dependent disease or disorder, a process for the manufacture of a compound of the formula I, and novel starting materials and intermediates for their manufacture.
  • the present invention also relates to the use of a compound of formula I in the manufacture of a pharmaceutical preparation for the treatment of a kinase dependent disease.
  • Lower alkyl for example, is n-pentyl, n-hexyl or n-heptyl or preferably CrC 4 -alkyl, especially as methyl, ethyl, n-propyl, sec-propyl, n-butyl, isobutyl, sec-butyl, t ⁇ /t-butyl.
  • C 0 -C 7 - is as defined above for “lower” with the difference that in case of "C 0 -" no carbon atom is present (that is, the moiety bound to C 0 is directly bound to the rest of the molecule).
  • Substituted lower alkyl or a substituted lower alkyl moiety is a lower alkyl radical/moiety substituted by one or more, preferably one, substituents selected independently from e.g. halo, morpholinyl-lower alkyl, piperazinyl-lower alkyl, lower alkyl-piperazinyl-lower alkyl, C 3 -C 8 - cycloalkylpiperazinyl, piperidinyl-lower alkyl, N-lower alkyl-piperidinyl-lower alkyl, piperi- dinyliden-lower alkyl or N-lower alkyl-piperidinylidene-lower alkyl, such as 1-methylpiperidin- 4-ylidenemethyl, 9-loweralkyl-3,9-diaza-bicyclo[3.3.1]non-3-yl-methyl, amino, N-lower alkyl- amino, N,N-di-lower
  • Halo(geno) is preferably iodo, bromo, chloro or fluoro, especially fluoro, chloro or bromo.
  • Substituted C 3 -C 8 -cycloalkyl is especially cyclopropyl or cyclohexyl and is preferably substituted as described for substituted aryl.
  • Unsubstituted Cs-C ⁇ -cycloalkyl is a corresponding moiety without substituent.
  • Substituted aryl is preferably an aromatic radical with 4 to 8 carbon atoms, especially phenyl, wherein said radical is substituted by one or more, preferably by one or two, radicals such as e.g. unsubstituted or substituted lower alkyl, such as halo-lower alkyl, morpholinyl-lower alkyl, piperazinyl-lower alkyl, lower alkyl-piperazinyl-lower alkyl, C 3 -C 8 -cycloalkylpiperazinyl, piperidinyl-lower alkyl, N-lower alkyl-piperidinyl-lower alkyl, piperidinyliden-lower alkyl or N- lower alkyl-piperidinylidene-lower alkyl, such as 1-methylpiperidin-4-ylidenemethyl; 9-(lower alkyl)-3,9-diaza-bicyclo[3.3.1]non-3-yl
  • Unsubstituted or substituted heterocyclyl is preferably a saturated, partially saturated or unsaturated mono- or bicyclic or bicycle radical having from 4 to 10 ring members and from 1 to 3 heteroatoms which are preferably selected from nitrogen, oxygen and sulfur, e.g. pyrrolidinyl, 2H-pyrazolyl, pyridyl, piperidinyl, piperazinyl, morpholinyl, thiomorpholinyl or 3,9- diaza-bicyclo[3.3.1]non-3-ylmethyl, said radical being unsubstituted or substituted by one or more, preferably by one or two, independently selected radicals such as e.g.
  • the substi- tuents if present are preferably one or more selected from those given for substituted lower alkyl.
  • Preferred is C 2 -C 8 -alkanoyl, such as acetyl.
  • lower alkoxy-carbonyl wherein the lower alkyl moiety is optionally substituted
  • the substi- tuents if present are preferably one or more selected from those given for substituted lower alkyl.
  • Preferred is lower alkoxycarbonyl, such as methoxycarbonyl, isobutoxycarbonyl or tert- butoxycarbonyl.
  • unsubstituted or substituted arylsulfonyl unsubstituted or substituted aryl is preferably as defined above.
  • N-mono- or N,N-di-substituted amino is preferably as defined above.
  • Preferred is N-lower alkylaminocarbonyl, such as methylcarbamoyl.
  • the substituents if present are preferably one or more selected from those given for substituted lower alkyl.
  • Preferred is lower alkoxy, such as methoxy.
  • R 7 is preferably H.
  • Z is preferably C.
  • W is preferably absent (that is, R 2 is directly bound to NH in formula I).
  • Ri is preferably halo, especially chloro, amino, lower alkylamino, e.g. methylamino, lower alkoxycarbonylamino, e.g. methoxy-, isobutoxy or tert-butoxy-carbonylamino, C 2 -Cs- alkanoylamino, e.g.
  • acetylamino, hydrazine, N-(N-mono- or N,N-di-loweralkylamino)-alkyl- amino such as N-[2-(N,N-dimethylamino)-ethyl]-amino or N-[3-(N,N-dimethylamino)-propyl]- amino, hydroxyl, lower-alkoxy, such as methoxy, hydroxymethyl or lower-alkoxymethyl, such as methoxymethyl.
  • R 2 is preferably a cyclohexyl, phenyl, 2H-pyrazolyl or pyridyl, especially a phenyl, radical wherein said radical is substituted by one or more, especially 1 or 2, substituents independently selected from the group consisting of lower alkyl, such as methyl, ethyl, isopropyl or te/t-butyl; halo-lower alkyl, such as especially trifluoromethyl or difluoroethyl; cyclopropyl; lower alkoxyphenyl, such as 4-methoxyphenyl; halo-phenyl, such as 4-fluorophenyl; (lower- alkoxyphenyl)-phenyl, such as 4-(4-methoxyphenyl)phenyl; lower alkoxy, especially methoxy; phenoxy; piperidinyl-oxy, such as piperidin-4-yloxy; N-lower alkyl-piperidinyl-
  • R 2 is very preferably phenyl substituted by one or two substituents selected from the group consisting of F, Cl, CF 3 , OCF 3 , CHF 2 , CF 2 CH 3 , methyl, ethyl, propyl, t ⁇ /t-butyl, phenoxy, halogen, methylpiperazinyl methyl, methoxy, cyclopropyl, methylpiperidinyl methyl and 4- methylimidazol-1 -yl.
  • Preferred is a compound of the formula I wherein one of A and B is N, the other and X are CH, respectively.
  • the present invention relates to a compound of the formula I wherein
  • R 1 is H; chloro, CH 2 OH, CH 2 OCH 2 phenyl, NH 2 , NHNH 2 , NHCH 3 or NHCOOCH 3 ;
  • R 2 is phenyl substituted by one or two substituents selected from the group consisting of halo
  • Ci -7 alkyl trifluoromethoxy, Ci -7 alkyl, phenoxy, halogen, Ci -7 alkylpiperazinyl Ci -7 alkyl, Ci-
  • A, B and X are independently selected from C(R 7 ) or N, with the proviso that not more than one of A, B and X is N;
  • R 7 is hydrogen
  • R 8 is hydrogen
  • Rg is a substituent; n is 0;
  • Y is O
  • W is absent
  • K is N or C, and either a), if K is C, the bond indicated by the waved line ( ⁇ ) is a double bond,
  • Q is selected from O-N S-N
  • N CH where the left N atom is bound by the bond shown in formula I to K, the right carbon atom (of CH) to C via the bond indicated by the broken line in formula I, with the proviso that said bond indicated by the broken line is a single bond to C; and the bond represented in bold is a double bond; or a tautomer thereof, and/or a (preferably pharmaceutically acceptable) salt thereof.
  • the present invention relates to a compound of the formula IA wherein X, A, B, R 1 , and R 2 are as defined above.
  • the present invention relates to a compound of the formula IB,
  • the present invention relates to a compound of the formula IC,
  • the present invention relates to a compound of the formula ID,
  • the present invention relates to a compound selected from the group consisting of
  • the present invention relates to a compound selected from the group consisting of
  • the present invention relates to a compound selected from the group consisting of
  • 6-(2-amino-pyrimidin-4-yloxy)-benzo[b]thiophene-3-carboxylic acid (4-methyl-3- trifluoromethyl-phenyl)-amide
  • 6-(2-amino-pyrimidin-4-yloxy)-benzo[b]thiophene-3-carboxylic acid (3-tert-butyl-phenyl)- amide
  • the present invention also relates to compounds of formula I
  • R3 is H, unsubstituted or substituted lower alkyl or unsubstituted or substituted lower alkylcarbonyl;
  • R 4 and R 5 are independently selected from the group consisting of H; unsubstituted or substituted lower alkyl; lower alkyl-carbonyl, wherein the lower alkyl moiety is optionally substituted; lower alkoxy-carbonyl, wherein the lower alkyl moiety is optionally substituted, lower alkylsulfonyl, wherein the lower alkyl moiety is optionally substituted, unsubstituted or substituted arylsulfonyl, and N-mono- or N,N-di-(substituted amino)-carbonyl; or one is unsubstituted or substituted amino, the other is one of the other moieties mentioned for R 4 and R 5 ;
  • R 6 is H; OH; unsubstituted or substituted lower alkyl; lower alkoxy, wherein the lower alkyl moiety is optionally substituted; or unsubstituted, mono- or di-substituted amino;
  • A, B and X are independently selected from C(R 7 ) or N, with the proviso that not more than one of A, B and X is N;
  • R 7 is selected from the group consisting of H, halo and unsubstituted or substituted lower alkyl
  • R 8 is hydrogen or lower alkyl
  • R 9 is a substituent
  • n 0, 1 , 2 or 3, preferably 0;
  • Z is N or CH
  • W is absent or is lower alkylene, especially CH 2 , CH 2 -CH 2 or CH 2 -CH 2 -CH 2 ;
  • K is N or C
  • N CH where the left N atom is bound by the bond shown in formula I to K, the right carbon atom (of CH) to Z via the bond indicated by the broken line in formula I, with the proviso that said bond indicated by the broken line is a single bond to Z; and the bond represented in bold is a double bond;
  • the present invention also relates to compounds of formula IAA
  • X, A, B, Y, W, R 1 , R 2 , Re, Rg and n are as defined above, a tautomer thereof and/or a salt thereof.
  • the present invention also relates to compounds of formula IBB,
  • X, A, B, Y, W, R 1 , R 2 , Rs, Rg and n are as defined above, a tautomer thereof and/or a salt thereof.
  • the present invention also relates to compounds of formula ICC,
  • X, A, B, Y, W, R 1 , R 2 , Rg and n are as defined above, a tautomer thereof and/or a salt thereof.
  • the present invention also relates to compounds of formula IDD,
  • X, A, B, Y, W, R 1 , R 2 , Rg and n are as defined above, a tautomer thereof and/or a salt thereof.
  • the present invention also relates to compounds of formula IEE, wherein X, A, B, Y, W, R 1 and R 2 are as defined above, a tautomer thereof and/or a salt thereof.
  • the present invention also relates to compounds of formula I wherein Ri is halo, lower alkyl, cyano, amino, lower alkylamino, lower alkanoylamino, lower alkoxycarbonylamino, lower alkylsulfonylamino, N-mono- or N,N-di-(lower alkyl)amino- carbonyl-amino, hydrazino, N-mono-or N,N-di-(loweralkyl)-hydrazino, amino-lower alkylamino, N-(mono- or di-loweralkyl)amino-lower alkyl-amino, hydroxy-lower alkyl or lower- alkoxy-lower alkyl,
  • R 2 is phenyl substituted by one or two substituents independently selected from lower alkyl, halo-lower alkyl, morpholinyl-lower alkyl, piperazinyl-lower alkyl, lower alkyl-piperazinyl-lower alkyl, C 3 -C 8 -cycloalkylpiperazinyl, piperidinyl-lower alkyl, N-lower alkyl-piperidinyl-lower alkyl, piperidinyliden-lower alkyl or N-lower alkyl-piperidinylidene-lower alkyl, such as 1- methylpiperidin-4-ylidenemethyl; 9-(lower alkyl)-3,9-diaza-bicyclo[3.3.1]non-3-yl-methyl; C 3 - C 8 -cycloalkyl; lower alkoxyphenyl; halo-phenyl, (lower-alkoxyphenyl)-pheny
  • A is CH or N and B is CH or N, with the proviso that nor more than one of A and B is N;
  • X is CH;
  • Rs is hydrogen or lower alkyl, preferably hydrogen;
  • any reference hereinbefore and hereinafter to these compounds is to be understood as referring also to the corresponding tautomers of these compounds, tautomeric mixtures of these compounds, N-oxides of these compounds, or salts of any of these, as appropriate and expedient and if not mentioned otherwise.
  • Tautomers can, e.g., be present in cases where amino or hydroxy are bound to carbon atoms that are bound to adjacent atoms by double bonds (e.g. keto-enol or imine-enamine tautomerism).
  • the compounds may thus be present as mixtures of isomers or preferably as pure isomers.
  • Salts are preferably the pharmaceutically acceptable salts of the compounds of formula I.
  • Salt-forming groups are groups or radicals having basic or acidic properties.
  • Compounds having at least one basic group or at least one basic radical, for example amino, a secondary amino group not forming a peptide bond or a pyridyl radical may form acid addition salts, for example with inorganic acids, such as hydrochloric acid, sulfuric acid or a phosphoric acid, or with suitable organic carboxylic or sulfonic acids, for example aliphatic mono- or di-carboxylic acids, such as trifluoroacetic acid, acetic acid, propionic acid, glycolic acid, succinic acid, maleic acid, fumaric acid, hydroxymaleic acid, malic acid, tartaric acid, citric acid or oxalic acid, or amino acids such as arginine or lysine, aromatic carboxylic acids, such as benzoic acid, 2-phenoxy-benzoic acid, 2-acetoxy-benzoic acid, salicylic acid, 4-aminosalicylic acid, aromatic-
  • Compounds having acidic groups, a carboxy group or a phenolic hydroxy group may form metal or ammonium salts, such as alkali metal or alkaline earth metal salts, for example sodium, potassium, magnesium or calcium salts, or ammonium salts with ammonia or suitable organic amines, such as tertiary monoamines, for example triethylamine or tri-(2-hydroxy- ethyl)-amine, or heterocyclic bases, for example ⁇ /-ethyl-piperidine or ⁇ /, ⁇ /'-dimethylpiper- azine. Mixtures of salts are possible.
  • metal or ammonium salts such as alkali metal or alkaline earth metal salts, for example sodium, potassium, magnesium or calcium salts
  • ammonium salts with ammonia or suitable organic amines such as tertiary monoamines, for example triethylamine or tri-(2-hydroxy- ethyl)-amine, or heterocyclic bases, for example
  • treatment refers to the prophylactic or preferably therapeutic (including but not limited to palliative, curing, symptom-alleviating, symptom-reducing, kinase-regulating and/or kinase-inhibiting) treatment of said diseases, especially of the diseases mentioned below.
  • diseases to be treated and are thus preferred for "use” of a compound of formula I are selected from protein kinase dependent ("dependent" meaning also “supported”, not only “solely dependent") diseases mentioned herein, especially proliferative diseases mentioned herein, more especially any one or more of these or other diseases that depend on one or more of c- AbI, Bcr-Abl, c-Kit, Raf kinases such as especially B-Raf, the rearranged during transfection (RET) proto-oncogene, Platelet-derived Growth Factor Receptors (PDGF-Rs), Lck, Hck and most especially the Vascular Endothelial Growth Factor Receptors (VEGF-Rs) such as in particular VEGF-R2, or a mutant of any one or more of these, and a compound of the formula I can therefore be used in the treatment of a kinase dependent disease, especially a disease depending on one or more of the kinases mentioned above and below, where (especially in the case of aber),
  • the compounds of formula I have valuable pharmacological properties and are useful in the treatment of protein kinase dependent diseases, for example as drugs to treat proliferative diseases.
  • the purity of the c-Abl kinase is >90% as judged by SDS-PAGE after Coomassie blue staining.
  • the assay contains (total volume of 30 ⁇ l_): c-Abl kinase (50 ng), 20 mM Tris-HCI, pH 7.5, 10 mM MgCI 2 , 10 ⁇ M Na 3 VO 4 , 1 mM DTT and 0.06 ⁇ Ci/assay [y 33 P]-ATP (5 ⁇ M ATP) using 30 ⁇ g/ml poly-Ala, GIu, Lys,Tyr-6:2:5:1 (PoIy-AEKY, Sigma P1152) in the presence of 1 % DMSO.
  • Reactions are terminated by adding 10 ⁇ l_ of 250 mM EDTA and 30 ⁇ l_ of the reaction mixture is transferred onto Immobilon-PVDF membrane (Millipore, Bedford, MA, USA) previously soaked for 5 min with MeOH, rinsed with water, then soaked for 5 min with 0.5 % H 3 PO 4 and mounted on vacuum manifold with disconnected vacuum source. After spotting all samples, vacuum is connected and each well rinsed with 200 ⁇ l_ 0.5 % H 3 PO 4 . Membranes are removed and washed on a shaker with 0.5 % H 3 PO 4 (4 times) and once with ethanol.
  • Membranes are counted after drying at ambient temperature, mounting in Packard TopCount 96-well frame, and addition of 10 ⁇ L/well of Microscint TM (Packard). Using this test system, the compounds of formula I show IC 50 values of inhibition in the range of 0.001 to 100 ⁇ M, usually between 0.05 and 5 ⁇ M.
  • Bcr-Abl inhibition can be determined by a capture ELISA as follows:
  • the murine myeloid progenitor cell line 32Dcl3 transfected with the p210 Bcr-Abl expression vector pGDp210Bcr/Abl (32D-bcr/abl) is obtained from J Griffin (Bazzoni et al., J. Clin Invest. 98, 521-8 (1996); Zhao et al., Blood 90, 4687-9 (1997)).
  • the cells express the fusion bcr-abl protein with a constitutively active abl kinase and proliferate growth factor-independent.
  • the cells are expanded in RPMI 1640 (AMIMED; cat # 1-41 F01 ), 10 % fetal calf serum, 2 mM glutamine (Gibco) ("complete medium"), and a working stock is prepared by freezing aliquots of 2 x 10 6 cells per vial in freezing medium (95 % fetal calf serum, 5 % dimethylsulfoxide (SIGMA, D-2650). After thawing, the cells are used during maximally 10 - 12 passages for the experiments.
  • the antibody anti-abl SH3 domain cat. # 06-466 from Upstate Biotechnology is used for the ELISA.
  • the anti-phosphotyrosine antibody Ab PY20 labelled with alkaline phosphatase (PYIO(AP)) from ZYMED (cat. # 03- 7722) is used.
  • PYIO(AP) alkaline phosphatase
  • ZYMED cat. # 03- 7722
  • STI571 methane sulfonate (monomesylate) salt
  • a stock solution of 10 mM is prepared in DMSO and stored at -20 °C.
  • the stock solution is diluted in complete medium in two steps (1 : 100 and 1 : 10) to yield a starting concentration of 10 ⁇ M followed by preparation of serial threefold dilutions in complete medium. No solubility problems are encountered using this procedure.
  • the test compounds of formula I are treated analogously.
  • 200O00 32D- bcr/abl cells in 50 ⁇ l are seeded per well in 96 well round bottom tissue culture plates. 50 ⁇ l per well of serial threefold dilutions of the test compoun are added to the cells in triplicates.
  • the final concentration of the test compound range e.g.
  • Untreated cells are used as control.
  • the compound is incubated together with the cells for 90 min at 37 °C, 5 % CO 2 , followed by centrifugation of the tissue culture plates at 1300 rpm (Beckman GPR centrifuge) and removal of the supernatants by careful aspiration taking care not to remove any of the pelleted cells.
  • the cell pellets are lysed by addition of 150 ⁇ l lysis buffer (50 mM Tris/HCI, pH 7.4, 150 mM sodium chloride, 5 mM EDTA, 1 mM EGTA, 1 % NP-40 (non-ionic detergent, Roche Diagnostics GmbH, Mannheim, Germany), 2 mM sodium ortho-vanadate, 1 mM phenylmethyl sulfonylfluoride, 50 ⁇ g/ml aprotinin and 80 ⁇ g/ml leupep- tin) and either used immediately for the ELISA or stored frozen at -20 °C until usage.
  • 150 ⁇ l lysis buffer 50 mM Tris/HCI, pH 7.4, 150 mM sodium chloride, 5 mM EDTA, 1 mM EGTA, 1 % NP-40 (non-ionic detergent, Roche Diagnostics GmbH, Mannheim, Germany
  • 2 mM sodium ortho-vanadate 1 mM phenylmethyl s
  • the anti-abl SH3 domain antibody is coated at 200 ng in 50 ⁇ l PBS per well to black ELISA plates (Packard HTRF-96 black plates; 6005207) overnight at 4 °C. After washing 3x with 200 ⁇ l/well PBS containing 0.05 % Tween 20 (PBST) and 0.5 % TopBlock (Juro, Cat. # TB 232010), residual protein binding sites are blocked with 200 ⁇ l/well PBST, 3 % TopBlock for 4 h at room temperature, followed by incubation with 50 ⁇ l lysates of untreated or test compound-treated cells (20 ⁇ g total protein per well) for 3-4 h at 4 °C.
  • PBST 0.05 % Tween 20
  • TopBlock TopBlock
  • the concentration of the anti-phosphotyrosine AB PY20 (AP) can be reduced to 0.2 ⁇ g/ml. Washing, blocking and incubation with the luminescent substrate are as above.
  • the quantification is achieved as follows: The difference between the ELISA readout (CPS) obtained for with the lysates of the untreated 32D-bcr/abl cells and the readout for the assay background (all components, but without cell lysate) is calculated and taken as 100 % reflecting the constitutively phosphorylated bcr-abl protein present in these cells. The activity of the compound in the bcr-abl kinase activity is expressed as percent reduction of the bcr-abl phosphorylation.
  • the values for the IC50 are determined from the dose response curves by graphical inter- or extrapolation.
  • the compounds of formula I here show IC 50 values in the range from 10 nM to 20 ⁇ M.
  • BaF3-Tel-PDGFRbeta and BaF3-KitD816V are BaF3 murine proB-cell lymphoma cell derivatives [the BaF3 cell line is available from the German Collection of Microorganisms and Cell Cultures (DSMZ), Braunschweig, Germany] that have been rendered IL-3-independent by stable transduction with Tel-fusion-activated PDGF ⁇ -R wild-type (Golub T. R. et al., Cell 77(2): 307-316, 1994) or D816V-mutation-activated c-kit, respectively.
  • Cells are cultured in RPMI-1640 (Animed # 1-14F01-I) supplemented with 2 % L-glutamine (Animed # 5-10K50-H) and 10 % fetal calf serum (FCS, Animed # 2-01 F16-I). Wild-type, untransfected BaF3 cells are maintained in above medium plus 10 U/ml IL-3 (mouse lnterleukin-3, Roche # 1380745). Cells are diluted in fresh medium to a final density of 3 x 10 5 cells per ml and 50 ⁇ l aliquots seeded into 96-well plates (1.5 x 10 4 cells per well). 50 ⁇ l 2x compound solutions are added.
  • the kinase inhibitor PKC412 is routinely used as internal control.
  • Control cells treated with DMSO (0.1 % final concentration) serve as growth reference (set as 100% growth).
  • a plate blank value is routinely determined in a well containing only 100 ⁇ l of medium and no cells. IC 50 determinations are performed based on eight 3-fold serial dilutions of the test compound, starting at 10 ⁇ M. Following incubation of the cells for 48 h at 37°C and 5% CO 2 , the effect of inhibitors on cell viability is assessed by the resazurin sodium salt dye reduction assay (commercially known as AlamarBlue assay) basically as previously described (O'Brien J. et al., Eur. J. Biochem.
  • Active Raf kinases such as active B-Raf protein, of human sequence are purified from insect cells using the baculoviral expression system. Raf inhibition is tested in 96-well microplates coated with l ⁇ B- ⁇ and blocked with Superblock. The phosphorylation of l ⁇ B- ⁇ at Serine 36 is detected using a phospho-l ⁇ B- ⁇ specific antibody (Cell Signaling #9246), an anti-mouse IgG alkaline phosphatase conjugated secondary antibody (Pierce # 31320), and an alkaline phosphatase substrate, ATTOPHOS (Promega, #S101 ).
  • RET kinase inhibition is determined as follows:
  • the baculovirus donor vector pFB-GSTX3 is used to generate a recombinant baculovirus that expresses the amino acid region 658-1072 (Swiss prot No. Q9BTB0) of the cytoplasmic kinase domain of human RET-Men2A which corresponds to the wild-type kinase domain of RET (wtRET) and RET-Men2B, which differs from the wtRET by the activating mutation in the activation loop M918T.
  • the coding sequence for the cytoplas- mic domain of wtRET is amplified by PCR from a cDNA library using specific primers.
  • RET- Men2B is generated through site-directed mutagenesis resulting in the M918T mutation.
  • the amplified DNA fragments and the pFB-GSTX3 vector are made compatible for ligation by digestion with Sail and Kpnl. Ligation of these DNA fragments results in the baculovirus donor plasmids pFB-GX3-RET-Men2A and pFB-GX3-RET-Men2B, respectively.
  • Production of virus The baculovirus donor plasmids containing the kinase domains are transfected into the DHIOBac cell line (GIBCO) and the transfected cells are plated on selective agar plates.
  • Colonies without insertion of the fusion sequence into the viral genome are blue. Single, white colonies are picked and viral DNA (bacmid) is isolated from the bacteria by standard plasmid purification procedures. Sf9 cells or Sf21 cells (American Type Culture Collection) are then transfected in 25 cm 2 flasks with the viral DNA using Cellfectin reagent.
  • Virus-containing media is collected from the transfected cell culture and used for infection to increase its titer. Virus-containing media obtained after two rounds of infection is used for large-scale protein expression. For large-scale protein expression 100 cm 2 round tissue culture plates are seeded with 5 x 10 7 cells/plate and infected with 1 ml of virus-containing media (approximately 5 MOIs). After 3 days, the cells are scraped off the plate and centrifuged at 500 rpm for 5 minutes.
  • Cell pellets from 10-20, 100 cm 2 plates are re-suspended in 50 ml of ice-cold lysis buffer (25 mM Tris-HCI, pH 7.5, 2 mM EDTA, 1 % NP-40, 1 mM DTT, 1 mM PMSF). The cells are stirred on ice for 15 minutes and then centrifuged at 5,000 rpms for 20 minutes.
  • ice-cold lysis buffer 25 mM Tris-HCI, pH 7.5, 2 mM EDTA, 1 % NP-40, 1 mM DTT, 1 mM PMSF.
  • the centrifuged cell lysate is loaded onto a 2 ml glutathione-sepharose column (Pharmacia) and washed 3 x with 10 ml of 25 mM Tris-HCI, pH 7.5, 2 mM EDTA, 1 mM DTT, 200 mM NaCI.
  • the GST-tagged proteins are then eluted by 10 applications (1 ml each) of 25 mM Tris-HCI, pH 7.5, 10 mM reduced-glutathione, 100 mM NaCI, 1 mM DTT, 10% glycerol and stored at -70 °C.
  • Tyrosine protein kinase assays with either purified GST-wtRET or GST-RET-Men2B protein are carried out in a final volume of 30 ⁇ l_ containing 15 ng of either GST-wtRET or GST-RET-Men2B protein, 20 mM Tris-HCI, pH 7.5, 1 mM MnCI 2 , 10 mM MgCI 2 , 1 mM DTT, 3 ⁇ g/ml poly(Glu.Tyr) 4:1 , 1 % DMSO, 2.0 ⁇ M ATP ( ⁇ -[ 33 P]-ATP 0.1 ⁇ Ci).
  • the activity is assayed in the presence or absence of inhibitors, by measuring the incorporation of 33 P from [ ⁇ 33 P] ATP into poly(Glu,Tyr) 4:1.
  • the assay is carried out in 96- well plates at ambient temperature for 15 minutes under conditions described above and terminated by the addition of 20 ⁇ l_ of 125 mM EDTA. Subsequently, 40 ⁇ l_ of the reaction mixture are transferred onto Immobilon-PVDF membrane (Millipore) previously soaked for 5 minutes with MeOH, rinsed with water, then soaked for 5 minutes with 0.5% H 3 PO 4 and mounted on vacuum manifold with disconnected vacuum source. After spotting all samples, vacuum is connected and each well rinsed with 200 ⁇ l_ 0.5% H 3 PO 4 .
  • Membranes are removed and washed 4 x on a shaker with 1.0% H 3 PO 4 , once with ethanol. Membranes are counted after drying at ambient temperature, mounting in Packard TopCount 96-well frame, and addition of 10 ⁇ L/well of Microscint TM (Packard). IC50 values are calculated by linear regression analysis of the percentage inhibition of each compound in duplicate, at 4 concentrations (usually 0.01 , 0.1 , 1 and 10 ⁇ M). One unit of protein kinase activity is defined as 1 nmole of 33 P transferred from [ ⁇ 33 P] ATP to the substrate protein/minute/mg of protein at 37°C. The compounds of formula I here show IC50 values in the range between 0.005 and 20 ⁇ M, especially between 0.01 and 1 ⁇ M.
  • VEGF-R1 inhibiton can be shown as follows: the test is conducted using Flt-1 VEGF-receptor tyrosine kinase. The detailed procedure is as follows: 30 ⁇ l kinase solution (kinase domain of Flt-1 , Shibuya et al., Oncogene 5, 519-24 [1990], according to the specific activity, in order to achieve an activity of 4000-6000 counts per minute [cpm] in the sample without inhibitor) in 20 mM Tris'HCI pH 7.5, 3 mM manganese dichloride (MnCI 2 ), 3 mM magnesium chloride (MgCI 2 ) and 3 ⁇ g/ml poly(Glu,Tyr) 4:1 (Sigma, Buchs, Switzerland), 8 ⁇ M [ 33 P]-ATP (0.2 ⁇ Ci/batch), 1 % dimethyl sulfoxide, and 0 to 50 ⁇ M of the compound to be tested are incubated together for 10 minutes at room temperature.
  • MnCI 2 manga
  • the reaction is then ended by the addition of 10 ⁇ l 0.25 M ethylenediaminetetraacetate (EDTA) pH 7.
  • EDTA ethylenediaminetetraacetate
  • LAB SYSTEMS LAB SYSTEMS, USA
  • the membrane is washed 4 times successively in a bath containing 0.5% phosphoric acid (H 3 PO 4 ), incubated for 10 minutes each time while shaking, then mounted in a Hewlett Packard TopCount Manifold and the radioactivity measured after the addition of 10 ⁇ l Microscint ® ( ⁇ -scintillation counter liquid; Packard USA).
  • ICso-values are determined by linear regression analysis of the percentages for the inhibition of each compound in three concentrations (as a rule 0.01 , 0.1 , and 1 ⁇ M).
  • the IC 50 values that can be found with the compounds of formula I are in the range of 0.001 to 100 ⁇ M, especially in the range from 0.01 to 20 ⁇ M.
  • the efficacy of the compounds according to the invention as inhibitors of VEGF-R2 tyrosine kinase activity can be tested using the VEGF receptor tyrosine kinase KDR.
  • the KDR kinase domain instead of the Flt-1 kinase domain, the KDR kinase domain (Parast et al., Biochemistry 37 (47), 16788-801 (1998)) is used.
  • the only difference in carrying out this test from the above test lies in the concentration of poly(Glu,Tyr) 4:1 (8 ⁇ g/ml), MnCI 2 (1 mM) and MgCI 2 (10 mM).
  • Compounds of formula I in this instance have IC 50 values in the range of 0.001 ⁇ M to 20 ⁇ M, preferred compounds especially in the range of 1 nM to 500 nM.
  • the compounds to be tested are then diluted in culture medium (without FCS, with 0.1 % bovine serum albumin) and added to the cells. (Controls comprise medium without test compounds). After two hours of incubation at 37°C, recombinant VEGF is added; the final VEGF concentration is 20 ng/ml.
  • the cells are washed twice with ice-cold PBS (phosphate-buffered saline) and immediately lysed in 100 ⁇ l lysis buffer per well.
  • the lysates are then centrifuged to remove the cell nuclei, and the protein concentrations of the supernatants are determined using a commercial protein assay (BIORAD).
  • BIORAD commercial protein assay
  • a sandwich ELISA is carried out to measure the VEGF-R2 phosphorylation: a monoclonal antibody to VEGF-R2 (for example Mab 1495.12.14; prepared by H. Towbin, Novartis or comparable monoclonal antibody) is immobilized on black ELISA plates (OptiPlateTM HTRF- 96 from Packard). The plates are then washed and the remaining free protein-binding sites are saturated with 3% TopBlock® (Juro, Cat. # TB232010) in phosphate buffered saline with Tween 20® (polyoxyethylen(20)sorbitane monolaurate, ICI/Uniquema) (PBST).
  • a monoclonal antibody to VEGF-R2 for example Mab 1495.12.14; prepared by H. Towbin, Novartis or comparable monoclonal antibody
  • OptiPlateTM HTRF- 96 black ELISA plates
  • the plates are then washed and the remaining free
  • the cell lysates (20 ⁇ g protein per well) are then incubated in these plates overnight at 4°C together with an antiphosphotyrosine antibody coupled with alkaline phosphatase (PY20:AP from Zymed).
  • PY20:AP alkaline phosphatase
  • the (plates are washed again and the) binding of the antiphosphotyrosine antibody to the captured phosphorylated receptor is then demonstrated using a luminescent AP substrate (CDP-Star, ready to use, with Emerald II; Applied Biosystems). The luminescence is measured in a Packard Top Count Microplate Scintillation Counter.
  • the activity of the tested substances is calculated as percent inhibition of VEGF-induced VEGF-R2 phosphorylation, wherein the concentration of substance that induces half the maximum inhibition is defined as the IC50 (inhibitory dose for 50% inhibition).
  • the compounds of formula I here show an IC 50 in the range of 0.001 to 20 ⁇ M, preferred compounds especially between 0.001 and 0.5 ⁇ M.
  • the compounds of formula I are especially suitable for the treatment of diseases associated with deregulated angiogenesis, especially diseases caused by ocular neovascularisation, especially retinopathies such as diabetic retinopathy or age-related macula degeneration, psoriasis, Von Hippel Lindau disease, hemangioblastoma, angioma, mesangial cell proliferative disorders such as chronic or acute renal diseases, e.g.
  • diabetic nephropathy malignant nephrosclerosis, thrombotic microangiopathy syndromes or transplant rejection, or especially inflammatory renal disease, such as glomerulonephritis, especially mesangioproliferative glomerulonephritis, haemolytic-uraemic syndrome, diabetic nephropathy, hypertensive nephrosclerosis, atheroma, arterial restenosis, autoimmune diseases, acute inflammation, including rheumatoid arthritis, fibrotic disorders (e.g. hepatic cirrhosis), diabetes, endometriosis, chronic asthma, arterial or post-transplantational atherosclerosis, neurodegenerative disorders, e.g.
  • multiple sclerosis and especially neoplastic diseases such as cancer (especially solid tumours but also leukemias), such as especially breast cancer, adenocarcinoma, colorectal cancer, lung cancer (especially non-small-cell lung cancer), renal cancer, liver cancer, pancreatic cancer, ovarian cancer or cancer of the prostate as well as myeloma, especially multiple myeloma, myelodysplastic syndrome, AML (acute myeloid leukemia), AMM (agnogenic myeloid metaplasia), mesothelioma, glioma and glioblastoma.
  • a compound of formula I is especially suited also to preventing the metastatic spread of tumours and the growth of micrometastases.
  • the compounds of the formula I due to their activity as kinases, are also useful as in treatment in connection with transplantation.
  • a compound of the formula I can be prepared by reacting
  • R 1 , X, A and B are as defined for a compound of the formula I, Hal is halo, especially chloro or bromo, and Ra is only present if X is not nitrogen (thus forming C-Ra) and is hydrogen or halo, especially chloro or bromo, and if Ra is halo reducing with hydrogen in the presence of a noble metal catalyst to hydrogen;
  • the reaction under a) preferably takes place in the presence of an appropriate solvent and a base, e.g. in N-methylpyrolidine in the presence of an alkaline metal phosphate, such as potassium phosphate, for example at temperatures from 0°C to the reflux temperature of the corresponding reaction mixture.
  • a base e.g. in N-methylpyrolidine
  • an alkaline metal phosphate such as potassium phosphate
  • halo Ra into hydrogen if Ra is hydrogen, then subsequently takes place e.g. by hydrogenation in the presence of a noble metal catalyst, such as palladium or platinum, preferably on a carrier, such as coal, in an appropriate solvent, such as water, tetrahydrofurane or mixtures thereof, and a tertiary nitrogen base, such as tri-lower alkylamine, e.g. trieathylamine, for example at temperatures from 0 °C to the reflux temperature of the corresponding reaction mixture.
  • a noble metal catalyst such as palladium or platinum
  • a carrier such as coal
  • an appropriate solvent such as water, tetrahydrofurane or mixtures thereof
  • a tertiary nitrogen base such as tri-lower alkylamine, e.g. trieathylamine, for example at temperatures from 0 °C to the reflux temperature of the corresponding reaction mixture.
  • the amide bond formation under b) preferably takes place, if the reactive derivative of the carbonic acid of the formula IV is a lower alkyl ester (with CO-O-lower alkyl instead of the carboxy group), e.g. by Lewis acid mediated N-acylation by first adding a Lewis acid, especially a tri-lower alkylaluminium, such as trimethylaluminium, to the amine of the formula V, e.g. in an appropriate solvent such as toluene, e.g. at temperatures from 0 to 30 °C, and then adding the lower alkyl ester of the formula IV, if desired, in another solvent, such as tetrahydrofurane, and heating, e.g.
  • a Lewis acid especially a tri-lower alkylaluminium, such as trimethylaluminium
  • the reactive derivative is a carbonic acid halogenide (with a group CO-HaI, wherein Hal is halo, preferably chloro or bromo, instead of the carboxy group in formula IV; obtainable e.g. by reacting the free carbonic acid of the formula IV with oxalyl chloride in an appropriate solvent, such as methylene chloride, e.g. at temperatures in the range from 0 to 50 °C) in an appropriate solvent, such as methylene chloride, e.g. at temperatures from 0 to 50 °C; or by forming the reactive derivative of the carbonic acid of the formula IV in situ using customary condensation reagents, such as HBTU, HAT or the like.
  • an appropriate solvent such as methylene chloride, e.g. at temperatures in the range from 0 to 50 °C
  • an appropriate solvent such as methylene chloride, e.g. at temperatures from 0 to 50 °C
  • customary condensation reagents such as HBTU, H
  • a compound of the formula IA may be converted into a different compounds of the formula I.
  • a compound of the formula I wherein R 1 is amino or -CrC 7 -NH 2 can be alkylated or acylated to a compound of the formula I wherein R 1 is -C 0 — C 7 -NR 4 R 5 wherein at least one of R 4 and R 5 is unsubstituted or substituted lower alkyl (e.g.
  • a compound of the formula I wherein R 1 is -Co-C 7 -Rs, wherein R 3 is is unsubstituted or substituted lower alkyl or unsubstituted or substituted alkylcarbonyl can be obtained by alkylation or acylation with a corresponding unsubstituted or substituted alkylhalogenide or alkylcarbonyl-halogenide, respectively.
  • a compound of the formula I wherein R 1 is halo, e.g. chloro or bromo, can be converted to the corresponding compound of the formula I wherein R 1 is NR 4 R 5 by reaction with an amine of the formula H-NR 4 R 5 , e.g. in the presence of an appropriate solvent, such as tetrahydrofurane, e.g. at temperatures in the range from 0 to 50 °C.
  • an appropriate solvent such as tetrahydrofurane, e.g. at temperatures in the range from 0 to 50 °C.
  • R 4 and/or R 5 are as defined under formula I and Hal is halogen, e.g. chloro or bromo..
  • a tertiary nitrogen base e.g. triethylamine
  • a catalyst such as PdCI 2 [P(C 6 H 5 ) 3 ] 2
  • R 6 is lower alkoxy which is unsubstituted or substituted, such as ethanol
  • elevated pressure e.g.
  • R 6 is hydroxy by hydrolysis, e.g. in the presence of a base such as lithium hydroxide in water and/or an appropriate organic solvent, such as tetrahydrofurane.
  • a base such as lithium hydroxide in water and/or an appropriate organic solvent, such as tetrahydrofurane.
  • a compound of the formula I wherein R 1 is methyl can be converted to a compound of the formula I wherein R 1 is -CH 2 -OR 3 wherein R 3 is as defined for a compound of the formula I, especially lower alkyl, by first converting it into a compound of the formula I * wherein instead of R 1 HaIo-CH 2 - is present, e.g. bromomethyl, for example by reacting the methyl compound with N-bromosuccinimide and ⁇ , ⁇ -azobisisobutyronitrile in an appropriate solvent, such as chloroform, at elevated temperatures, e.g.
  • Salts of compounds of formula I having at least one salt-forming group may be prepared in a manner known per se. For example, an acid addition salt of compounds of formula I with basic groups (e.g. basic nitrogen) can be obtained in customary manner, e.g. by treating a compound of the formula I with an acid or a suitable anion exchange reagent.
  • basic groups e.g. basic nitrogen
  • a salt of a compound of formula I having acid groups may be formed by treating the compound with a metal compound, such as an alkali metal salt of a suitable organic carboxylic acid, e.g. the sodium salt of 2-ethylhexanoic acid, with an organic alkali metal or alkaline earth metal compound, such as the corresponding hydroxide, carbonate or hydrogen carbonate, such as sodium or potassium hydroxide, carbonate or hydrogen carbonate, with a corresponding calcium compound or with ammonia or a suitable organic amine, stoichiometric amounts or only a small excess of the salt-forming agent preferably being used.
  • a metal compound such as an alkali metal salt of a suitable organic carboxylic acid, e.g. the sodium salt of 2-ethylhexanoic acid
  • an organic alkali metal or alkaline earth metal compound such as the corresponding hydroxide, carbonate or hydrogen carbonate, such as sodium or potassium hydroxide, carbonate or hydrogen carbonate, with a corresponding calcium compound
  • a free carboxy group and a free amino group may be formed, e.g. by the neutralization of salts, such as acid addition salts, to the isoelectric point, e.g. with weak bases, or by treatment with ion exchangers.
  • salts such as acid addition salts
  • Stereoisomeric mixtures of a compound of the formula I can be separated into their corresponding isomers in a manner known per se by means of appropriate separation methods.
  • Diastereomeric mixtures for example may be separated into their individual diastereomers by means of fractionated crystallization, chromatography, solvent distribution, and similar procedures. This separation may take place either at the level of one of the starting compounds or in a compound of formula I itself.
  • Enantiomers may be separated through the formation of diastereomeric salts, for example by salt formation with an enantiomer-pure chiral acid, or by means of chromatography, for example by HPLC, using chromatographic substrates with chiral ligands.
  • Prodrug derivatives of the compounds of the invention can be prepared by methods known to those of ordinary skill in the art (e.g., for further details see Saulnier et al., (1994), Bioorganic and Medicinal Chemistry Letters, Vol. 4, p. 1985).
  • appropriate prodrugs can be prepared by reacting a non-derivatized compound of the invention with a suitable carbamylating agent (e.g., 1 ,1-acyloxyalkylcarbanochloridate, para-nitrophenyl carbonate, or the like).
  • Protected derivatives of the compounds of the invention can be made by means known to those of ordinary skill in the art. A detailed description of techniques applicable to the creation of protecting groups and their removal can be found in T. W. Greene, "Protecting Groups in Organic Chemistry", 3 rd edition, John Wiley and Sons, Inc., 1999. Corresponding protecting groups can be introduced, used and removed at appropriate stages at any stage in the manufacture of a compound of the formula I.
  • Hydrates of compounds of the present invention can be conveniently prepared, or formed during the process of the invention, as solvates (e.g., hydrates). Hydrates of compounds of the present invention can be conveniently prepared by recrystallization from an aqueous/organic solvent mixture, using organic solvents such as dioxin, tetrahydrofuran or methanol.
  • Intermediates and final products can be worked up and/or purified according to standard methods, e.g. using chromatographic methods, distribution methods, (re-) crystallization, and the like.
  • Starting materials can, for example, preferably be prepared as follows: Where in the starting materials and intermediates Ri, R 2 , R3, R 4 , R5, Re, R7, Re, R9, A, B, X, Y, Z, W, K, Q, n, a bond indicated by a waved line, a bond indicated by a broken line and/or a bond represented in bold, these symbols preferably have the meanings given for a compound of the formula I, if not indicated otherwise.
  • the starting materials used in the preparation of the compounds of formula I are known, capable of being prepared according to known processes, or commercially obtainable.
  • the anilines to be used as starting material in the preparation of the compounds of formula I can be prepared as described in WO 03/099771 , WO 05/051366 or by analogy thereto, are commercially available or can be prepared according to known processes.
  • Starting materials and appropriate manufacturing methods can also be deduced from copending patent application PCT/IB2005/004030 published on June 8 th , 2006 under WO2006/059234 which is here, especially regarding such materials and manufacturing methods, incorporated by reference, as well as from the reference examples from that application.
  • the 6-benzyloxy- benzo[d]isoxazole-3-carboxylic acid ethyl ester can then, by or in analogy to the procedure given in Example 1 , Step 1.2, be reacted with an amino compound of the formula V as defined above, followed by removal of the 6-benzyl protection group by catalytic hydrogenation e.g. as described in Example 1 Step 1.3.
  • the compound of the formula MC is obtained.
  • a compound of the formula MD
  • a compound of the formula Il can be obtained from 6- methoxy-benzo[d]isothiazole-3-carboxylic acid (see Example 6 Step 6.1 ) by reaction with a compound of the formula V as given above by or in analogy to the reaction given in Step 20.6 to the corresponding amide from which then the methyl of the 6-methoxy group can be cleaved off by or in analogy to the method described in Step 6.2 with BBr 3 in methylene chloride, yielding a corresponding compound of the formula MD.
  • an embodiment of a compound of the formula M can, for example, be prepared from 6- hydroxy-benzofuran-3-carboxylic acid methyl ester (see Example 9 Step 9.4) followed by reaction with a compound of the formula V as described above under reaction conditions analogous to those described in Example 9 to give corresponding compounds of the formula MA.
  • an embodiment of a compound of the formula II can, for example, be prepared from 6- hydroxy-benzothiophene-3-carboxylic acid methyl ester (see Example 12 Step 12.3) followed by reaction with a compound of the formula V as described above under reaction conditions as described or analogous to those described in Example 26.4 and if required 26.5 to give corresponding compounds of the formula IB.
  • 6-hydroxy-benzo[d]isothiazole-3-carboxylic acid lower alkyl ester as a starting material for a compound of the formula ID can be obtained from 6-methoxy-benzo[d]isothiazole-3- carboxylic acid (see Example 6, Step 6.1 ) by esterification with a lower alkanol according to standard procedures and conversion of the 6-methoxy- group in the obtainable product under analogous conditions as described in Example 6 Step 6.2; 6-hydroxy-benzofuran-3- carboxylic acid methyl ester as a further embodiment of a compound of the formula Vl (see Example 9 Step 9.4) can serve as a starting material for a compound of the formula IA.
  • 6- Hydroxy-benzothiophene-3-carboxylic acid methyl ester (see Example 12 Step 12.3) as a further embodiment of a compound of the formula Vl can serve as a starting material for a compound of the formula IB.
  • 6-Hydroxypyrazolo[1 ,5-a]pyridine-3-carboxylic acid methyl ester (see example 15 Step 15.6) can serve as starting material for a compound of the formula IE, e.g. by removal .
  • the esters of the formula Vl can be used directly in the process of process variant b) given above or converted into free carbonic acids.
  • a compound of the formula Vl can then be reacted with a compound of the formula III as defined above under reaction conditions as defined for process a) given above (reaction of a compound of the formula Vl instead of a compound of the formula Il given there with a compound of the formula III).
  • protecting groups may be used where appropriate or desired, even if this is not mentioned specifically, to protect functional groups that are not intended to take part in a given reaction, and they can be introduced and/or removed at appropriate or desired stages. Reactions comprising the use of protecting groups are therefore included as possible wherever reactions without specific mentioning of protection and/or deprotection are described in this specification.
  • protecting group a readily removable group that is not a constituent of the particular desired end product of formula IA is designated a "protecting group", unless the context indicates otherwise.
  • the protection of functional groups by such protecting groups, the protecting groups themselves, and the reactions appropriate for their removal are described for example in standard reference works, such as J. F. W. McOmie, "Protective Groups in Organic Chemistry", Plenum Press, London and New York 1973, in T. W. Greene and P. G. M. Wuts, "Protective Groups in Organic Synthesis", Third edition, Wiley, New York 1999, in “The Peptides”; Volume 3 (editors: E. Gross and J.
  • All the above-mentioned process steps can be carried out under reaction conditions that are known p_er se, preferably those mentioned specifically, in the absence or, customarily, in the presence of solvents or diluents, preferably solvents or diluents that are inert towards the reagents used and dissolve them, in the absence or presence of catalysts, condensation or neutralizing agents, for example ion exchangers, such as cation exchangers, e.g.
  • solvents from which those solvents that are suitable for any particular reaction may be selected include those mentioned specifically or, for example, water, esters, such as lower alkyl-lower alkanoates, for example ethyl acetate, ethers, such as aliphatic ethers, for example diethyl ether, or cyclic ethers, for example tetrahydrofurane or dioxane, liquid aromatic hydrocarbons, such as benzene or toluene, alcohols, such as methanol, ethanol or 1- or 2-propanol, nitriles, such as acetonitrile, halogenated hydrocarbons, e.g.
  • the invention relates also to those forms of the process in which a compound obtainable as intermediate at any stage of the process is used as starting material and the remaining process steps are carried out, or in which a starting material is formed under the reaction conditions or is used in the form of a derivative, for example in protected form or in the form of a salt, or a compound obtainable by the process according to the invention is produced under the process conditions and processed further ⁇ n situ.
  • those starting materials are preferably used which result in compounds of formula IA described as being preferred.
  • the invention also relates to novel intermediates and/or starting materials. Special preference is given to reaction conditions and novel intermediates that are identical or analogous to those mentioned in the Examples. Pharmaceutical Methods, Preparations and the Like
  • the invention relates also to pharmaceutical compositions comprising a compound of formula I, to their use in the therapeutic (in a broader aspect of the invention also prophylactic) treatment or a method of treatment of a kinase dependent disease, especially the preferred diseases mentioned above, to the compounds for said use and to pharmaceutical preparations and their manufacture, especially for said uses.
  • the present invention also relates to pro-drugs of a compound of formula I that convert in vivo to the compound of formula I as such. Any reference to a compound of formula I is therefore to be understood as referring also to the corresponding pro-drugs of the compound of formula I, as appropriate and expedient.
  • pharmacologically acceptable compounds of the present invention may be present in or employed, for example, for the preparation of pharmaceutical compositions that comprise an effective amount of a compound of the formula I, or a pharmaceutically acceptable salt thereof, as active ingredient together or in admixture with one or more inorganic or organic, solid or liquid, pharmaceutically acceptable carriers (carrier materials).
  • compositions according to the invention are those for enteral, such as nasal, rectal or oral, or parenteral, such as intramuscular or intravenous, administration to warmblooded animals (especially a human), that comprise an effective dose of the pharmacologically active ingredient, alone or together with a significant amount of a pharmaceutically acceptable carrier.
  • the dose of the active ingredient depends on the species of warm-blooded animal, the body weight, the age and the individual condition, individual pharmacokinetic data, the disease to be treated and the mode of administration.
  • the invention relates also to a method of treatment for a disease that responds to inhibition of a protein kinase and/or a proliferative disease, which comprises administering a (against the mentioned diseases) prophylactically or especially therapeutically effective amount of a compound of formula I according to the invention, or a tautomer thereof or a pharmaceutically acceptable salt thereof, especially to a warm-blooded animal, for example a human, that, on account of one of the mentioned diseases, requires such treatment.
  • the dose of a compound of the formula I or a pharmaceutically acceptable salt thereof to be administered to warm-blooded animals preferably is from approximately 3 mg to approximately 1O g, more preferably from approximately 10 mg to approximately 1.5 g, most preferably from about 100 mg to about 1000 mg /person/day, divided preferably into 1-3 single doses which may, for example, be of the same size. Usually, children receive half of the adult dose.
  • compositions comprise from approximately 1 % to approximately 95%, preferably from approximately 20% to approximately 90%, active ingredient.
  • Pharmaceutical compositions according to the invention may be, for example, in unit dose form, such as in the form of ampoules, vials, suppositories, dragees, tablets or capsules.
  • compositions of the present invention are prepared in a manner known per se, for example by means of conventional dissolving, lyophilizing, mixing, granulating or confectioning processes.
  • a compound of the formula I may also be used to advantage in combination with other antiproliferative agents.
  • antiproliferative agents include, but are not limited to aromatase inhibitors; antiestrogens; topoisomerase I inhibitors; topoisomerase Il inhibitors; microtubule active agents; alkylating agents; histone deacetylase inhibitors; compounds which induce cell differentiation processes; cyclooxygenase inhibitors; MMP inhibitors; mTOR inhibitors; antineoplastic antimetabolites; platin compounds; compounds targeting/decreasing a protein or lipid kinase activity and further anti-angiogenic compounds; compounds which target, decrease or inhibit the activity of a protein or lipid phosphatase; gonadorelin agonists; anti-an- drogens; methionine aminopeptidase inhibitors; bisphosphonates; biological response modifiers; antiproliferative antibodies; heparanase inhibitors; inhibitors of Ras oncogenic isoforms
  • aromatase inhibitor as used herein relates to a compound which inhibits the estrogen production, i.e. the conversion of the substrates androstenedione and testosterone to estrone and estradiol, respectively.
  • the term includes, but is not limited to steroids, especially atamestane, exemestane and formestane and, in particular, non-steroids, especially aminoglutethimide, roglethimide, pyridoglutethimide, trilostane, testolactone, ketokonazole, vorozole, fadrozole, anastrozole and letrozole.
  • Exemestane can be administered, e.g., in the form as it is marketed, e.g.
  • AROMASIN Formestane can be administered, e.g., in the form as it is marketed, e.g. under the trademark LENTARON. Fadrozole can be administered, e.g., in the form as it is marketed, e.g. under the trademark AFEMA. Anastrozole can be administered, e.g., in the form as it is marketed, e.g. under the trademark ARIMIDEX. Letrozole can be administered, e.g., in the form as it is marketed, e.g. under the trademark FEMARA or FEMAR. Aminoglutethimide can be administered, e.g., in the form as it is marketed, e.g. under the trademark ORIMETEN.
  • a combination of the invention comprising a chemotherapeutic agent which is an aromatase inhibitor is particularly useful for the treatment of hormone receptor positive tumors, e.g. breast tumors.
  • antiestrogen as used herein relates to a compound which antagonizes the effect of estrogens at the estrogen receptor level.
  • the term includes, but is not limited to tamoxifen, fulvestrant, raloxifene and raloxifene hydrochloride.
  • Tamoxifen can be administered, e.g., in the form as it is marketed, e.g. under the trademark NOLVADEX.
  • Raloxifene hydrochloride can be administered, e.g., in the form as it is marketed, e.g. under the trademark EVISTA.
  • Fulvestrant can be formulated as disclosed in US 4,659,516 or it can be administered, e.g., in the form as it is marketed, e.g. under the trademark FASLODEX.
  • a combination of the invention comprising a chemotherapeutic agent which is an antiestrogen is particularly useful for the treatment of estrogen receptor positive tumors, e.g. breast tumors.
  • anti-androgen as used herein relates to any substance which is capable of inhibiting the biological effects of androgenic hormones and includes, but is not limited to, bicalutamide (CASODEX), which can be formulated, e.g. as disclosed in US 4,636,505.
  • CASODEX bicalutamide
  • gonadorelin agonist includes, but is not limited to abarelix, go- serelin and goserelin acetate.
  • Goserelin is disclosed in US 4,100,274 and can be admi- nistered, e.g., in the form as it is marketed, e.g. under the trademark ZOLADEX.
  • Abarelix can be formulated, e.g. as disclosed in US 5,843,901.
  • topoisomerase I inhibitor includes, but is not limited to topotecan, gimatecan, irinotecan, camptothecian and its analogues, 9-nitrocamptothecin and the macromolecular camptothecin conjugate PNU-166148 (compound A1 in WO99/ 17804).
  • Irinotecan can be administered, e.g. in the form as it is marketed, e.g. under the trademark CAMPTOSAR.
  • Topotecan can be administered, e.g., in the form as it is marketed, e.g. under the trademark HYCAMTIN.
  • topoisomerase Il inhibitor includes, but is not limited to the anthra- cyclines such as doxorubicin (including liposomal formulation, e.g. CAELYX), daunorubicin, epirubicin, idarubicin and nemorubicin, the anthraquinones mitoxantrone and losoxantrone, and the podophillotoxines etoposide and teniposide.
  • Etoposide can be administered, e.g. in the form as it is marketed, e.g. under the trademark ETOPOPHOS.
  • Teniposide can be administered, e.g. in the form as it is marketed, e.g.
  • Doxorubicin can be administered, e.g. in the form as it is marketed, e.g. under the trademark ADRIBLASTIN or ADRIAMYCIN.
  • Epirubicin can be administered, e.g. in the form as it is marketed, e.g. under the trademark FARMORUBICIN.
  • Idarubicin can be administered, e.g. in the form as it is marketed, e.g. under the trademark ZAVEDOS.
  • Mitoxantrone can be administered, e.g. in the form as it is marketed, e.g. under the trademark NOVANTRON.
  • microtubule active agent relates to microtubule stabilizing, microtubule destabilizing agents and microtublin polymerization inhibitors including, but not limited to taxanes, e.g. paclitaxel and docetaxel, vinca alkaloids, e.g., vinblastine, especially vinblastine sulfate, vincristine especially vincristine sulfate, and vinorelbine, discodermolides, cochicine and epothilones and derivatives thereof, e.g. epothilone B or D or derivatives thereof.
  • Paclitaxel may be administered e.g. in the form as it is marketed, e.g. TAXOL.
  • Docetaxel can be administered, e.g., in the form as it is marketed, e.g. under the trademark TAXOTERE.
  • Vinblastine sulfate can be administered, e.g., in the form as it is marketed, e.g. under the trademark VINBLASTIN R. P..
  • Vincristine sulfate can be administered, e.g., in the form as it is marketed, e.g. under the trademark FARMISTIN.
  • Discodermolide can be obtained, e.g., as disclosed in US 5,010,099.
  • Epothilone derivatives which are disclosed in WO 98/10121 , US 6,194,181 , WO 98/25929, WO 98/08849, WO 99/43653, WO 98/22461 and WO 00/31247.
  • Epothilone A and/or B are Especially preferred.
  • alkylating agent includes, but is not limited to, cyclophosphamide, ifosfamide, melphalan or nitrosourea (BCNU or Gliadel). Cyclophosphamide can be administered, e.g., in the form as it is marketed, e.g. under the trademark CYCLOSTIN. Ifosfamide can be administered, e.g., in the form as it is marketed, e.g. under the trademark HOLOXAN.
  • histone deacetylase inhibitors or "HDAC inhibitors” relates to compounds which inhibit the histone deacetylase and which possess antiproliferative activity. This includes compounds disclosed in WO 02/22577, especially N-hydroxy-3-[4-[[(2-hydroxyethyl)[2-(1 H- indol-3-yl)ethyl]-amino]methyl]phenyl]-2E-2-propenamide, N-hydroxy-3-[4-[[[2-(2-methyl-1 /-/- indol-3-yl)-ethyl]-amino]methyl]phenyl]-2E-2-propenamide and pharmaceutically acceptable salts thereof. It further especially includes Suberoylanilide hydroxamic acid (SAHA).
  • SAHA Suberoylanilide hydroxamic acid
  • anti-plastic antimetabolite includes, but is not limited to, 5-fluorouracil (5-FU); capecitabine; gemcitabine; DNA de-methylating agents, such as 5-azacytidine and deci- tabine; methotrexate; edatrexate; and folic acid antagonists such as pemetrexed.
  • Capecitabine can be administered, e.g., in the form as it is marketed, e.g. under the trademark XELODA.
  • Gemcitabine can be administered, e.g., in the form as it is marketed, e.g. under the trademark GEMZAR.
  • the monoclonal antibody trastuzumab which can be administered, e.g., in the form as it is marketed, e.g. under the trademark HERCEPTIN.
  • platinum compound as used herein includes, but is not limited to, carboplatin, cis- platin, cisplatinum and oxaliplatin.
  • Carboplatin can be administered, e.g., in the form as it is marketed, e.g. under the trademark CARBOPLAT.
  • Oxaliplatin can be administered, e.g., in the form as it is marketed, e.g. under the trademark ELOXATIN.
  • the term "compounds targeting/decreasing a protein or lipid kinase activity and further anti- angiogenic compounds” as used herein includes, but is not limited to: protein tyrosine kinase and/or serine and/or threonine kinase inhibitors or lipid kinase inhibitors, e.g.: a) compounds targeting, decreasing or inhibiting the activity of the fibroblast growth factor- receptors (FGF-Rs); b) compounds targeting, decreasing or inhibiting the activity of the insulin-like growth factor I receptor (IGF-IR), especially compounds which inhibit the IGF-IR, such as those compounds disclosed in WO 02/092599; c) compounds targeting, decreasing or inhibiting the activity of the Trk receptor tyrosine kinase family; d) compounds targeting, decreasing or inhibiting the activity of the AxI receptor tyrosine kinase family; e) compounds targeting, decreasing or inhibiting the activity of the c-Met receptor;
  • examples of further compounds include e.g. UCN-01 , safingol, BAY 43-9006, Bryostatin 1 , Perifosine; llmofosine; RO 318220 and RO 320432; GO 6976; lsis 3521 ; LY333531/LY379196; isochinoline compounds such as those disclosed in WO 00/09495; FTIs; PD184352 or QAN697 (a P13K inhibitor); g) compounds targeting, decreasing or inhibiting the activity of a protein-tyrosine kinase, such as imatinib mesylate (GLIVEC/GLEEVEC) or tyrphostin.
  • a protein-tyrosine kinase such as imatinib mesylate (GLIVEC/GLEEVEC) or tyrphostin.
  • a tyrphostin is preferably a low molecular weight (Mr ⁇ 1500) compound, or a pharmaceutically acceptable salt thereof, especially a compound selected from the benzylidenemalonitrile class or the S-arylbenzene- malonirile or bisubstrate quinoline class of compounds, more especially any compound selected from the group consisting of Tyrphostin A23/RG-50810; AG 99; Tyrphostin AG 213; Tyrphostin AG 1748; Tyrphostin AG 490; Tyrphostin B44; Tyrphostin B44 (+) enantiomer; Tyrphostin AG 555; AG 494; Tyrphostin AG 556, AG957 and adaphostin (4- ⁇ [(2,5-dihydroxy- phenyl)methyl]amino ⁇ -benzoic acid adamantyl ester; NSC 680410, adaphostin); and h) compounds targeting, decreasing or inhibiting the activity of the epidermal growth factor
  • EGF receptor ErbB2, ErbB3 and ErbB4 or bind to EGF or EGF related ligands, and are in particular those compounds, proteins or monoclonal antibodies generically and specifically disclosed in WO 97/02266, e.g. the compound of ex. 39, or in EP 0 564 409, WO 99/03854, EP 0520722, EP 0 566 226, EP 0 787 722, EP 0 837 063, US 5,747,498, WO 98/10767, WO 97/30034, WO 97/49688, WO 97/38983 and, especially, WO 96/30347 (e.g. compound known as CP 358774), WO 96/33980 (e.g.
  • compound ZD 1839 and WO 95/03283 e.g. compound ZM105180
  • trastuzumab HERCEPTIN
  • cetuximab cetuximab
  • Iressa erlotinib
  • CI-1033 EKB-569
  • GW-2016 E1.1 , E2.4, E2.5, E6.2, E6.4, E2.11 , E6.3 or E7.6.3, and 7H-pyrrolo-[2,3-d]pyri- midine derivatives which are disclosed in WO 03/013541.
  • Further anti-angiogenic compounds include compounds having another mechanism for their activity, e.g. unrelated to protein or lipid kinase inhibition e.g. thalidomide (THALOMID) and TNP-470.
  • TAALOMID thalidomide
  • Compounds which target, decrease or inhibit the activity of a protein or lipid phosphatase are e.g. inhibitors of phosphatase 1 , phosphatase 2A, PTEN or CDC25, e.g. okadaic acid or a derivative thereof.
  • Compounds which induce cell differentiation processes are e.g. retinoic acid, ⁇ - ⁇ - or ⁇ - tocopherol or ⁇ - ⁇ - or ⁇ -tocotrienol.
  • cyclooxygenase inhibitor includes, but is not limited to, e.g. Cox-2 inhibitors, 5-alkyl substituted 2-arylaminophenylacetic acid and derivatives, such as cele- coxib (CELEBREX), rofecoxib (VIOXX), etoricoxib, valdecoxib or a 5-alkyl-2-arylaminophe- nylacetic acid, e.g. 5-methyl-2-(2'-chloro-6'-fluoroanilino)phenyl acetic acid, lumiracoxib.
  • Cox-2 inhibitors 5-alkyl substituted 2-arylaminophenylacetic acid and derivatives, such as cele- coxib (CELEBREX), rofecoxib (VIOXX), etoricoxib, valdecoxib or a 5-alkyl-2-arylaminophe- nylacetic acid, e.g. 5-methyl-2-(2'-chlor
  • mTOR inhibitors relates to compounds which inhibit the mammalian target of rapamycin (mTOR) and which possess antiproliferative activity such as sirolimus (Rapamune®), everolimus (CerticanTM), CCI-779 and ABT578.
  • bisphosphonates as used herein includes, but is not limited to, etridonic, clo- dronic, tiludronic, pamidronic, alendronic, ibandronic, risedronic and zoledronic acid.
  • Etridonic acid can be administered, e.g., in the form as it is marketed, e.g. under the trademark DIDRONEL.
  • Clodronic acid can be administered, e.g., in the form as it is marketed, e.g. under the trademark BONEFOS.
  • titaniumudronic acid can be administered, e.g., in the form as it is marketed, e.g. under the trademark SKELID.
  • “Pamidronic acid” can be administered, e.g. in the form as it is marketed, e.g. under the trademark AREDIATM.
  • “Alendronic acid” can be administered, e.g., in the form as it is marketed, e.g. under the trademark FOSAMAX.
  • “Ibandronic acid” can be administered, e.g., in the form as it is marketed, e.g. under the trademark BONDRANAT.
  • “Risedronic acid” can be administered, e.g., in the form as it is marketed, e.g. under the trademark ACTONEL.
  • "Zoledronic acid” can be administered, e.g. in the form as it is marketed, e.g. under the trademark ZOMETA.
  • heparanase inhibitor refers to compounds which target, decrease or inhibit heparin sulphate degradation.
  • the term includes, but is not limited to, PI-88.
  • biological response modifier refers to a lymphokine or interferons, e.g. interferon ⁇ .
  • inhibitor of Ras oncogenic isoforms e.g. H-Ras, K-Ras, or N-Ras
  • H-Ras, K-Ras, or N-Ras refers to compounds which target, decrease or inhibit the oncogenic activity of Ras e.g. a "farnesyl transferase inhibitor”, e.g. L-744832, DK8G557 or R115777 (Zarnestra).
  • telomerase inhibitor refers to compounds which target, decrease or inhibit the activity of telomerase.
  • Compounds which target, decrease or inhibit the activity of telomerase are especially compounds which inhibit the telomerase receptor, e.g. telomestatin.
  • methionine aminopeptidase inhibitor refers to compounds which target, decrease or inhibit the activity of methionine aminopeptidase.
  • Compounds which target, decrease or inhibit the activity of methionine aminopeptidase are e.g. bengamide or a derivative thereof.
  • proteasome inhibitor refers to compounds which target, decrease or inhibit the activity of the proteasome.
  • Compounds which target, decrease or inhibit the activity of the proteasome include e.g. PS-341 and MLN 341.
  • matrix metalloproteinase inhibitor or (“MMP inhibitor”) as used herein includes, but is not limited to collagen peptidomimetic and nonpeptidomimetic inhibitors, tetracycline derivatives, e.g. hydroxamate peptidomimetic inhibitor batimastat and its orally bioavailable analogue marimastat (BB-2516), prinomastat (AG3340), metastat (NSC 683551 ) BMS- 279251 , BAY 12-9566, TAA211 , MMI270B or AAJ996.
  • MMP inhibitor matrix metalloproteinase inhibitor
  • agents used in the treatment of hematologic malignancies includes, but is not limited to FMS-like tyrosine kinase inhibitors e.g. compounds targeting, decreasing or inhibiting the activity of Flt-3; interferon, 1-b-D-arabinofuransylcytosine (ara-c) and bisulfan; and ALK inhibitors e.g. compounds which target, decrease or inhibit anaplastic lymphoma kinase.
  • FMS-like tyrosine kinase inhibitors e.g. compounds targeting, decreasing or inhibiting the activity of Flt-3
  • interferon 1-b-D-arabinofuransylcytosine (ara-c) and bisulfan
  • ALK inhibitors e.g. compounds which target, decrease or inhibit anaplastic lymphoma kinase.
  • HSP90 inhibitors as used herein includes, but is not limited to, compounds targeting, decreasing or inhibiting the intrinsic ATPase activity of HSP90; degrading, targeting, decreasing or inhibiting the HSP90 client proteins via the ubiquitin proteasome pathway.
  • Compounds targeting, decreasing or inhibiting the intrinsic ATPase activity of HSP90 are especially compounds, proteins or antibodies which inhibit the ATPase activity of HSP90 e.g.,17-allylamino,17-demethoxygeldanamycin (17AAG), a geldanamycin derivative; other geldanamycin related compounds; radicicol and HDAC inhibitors.
  • antiproliferative antibodies includes, but is not limited to trastuzu- mab (HerceptinTM), Trastuzumab-DM1 , bevacizumab (AvastinTM), rituximab (Rituxan®), PRO64553 (anti-CD40) and 2C4 Antibody.
  • antibodies is meant e.g. intact monoclonal antibodies, polyclonal antibodies, multispecific antibodies formed from at least 2 intact antibodies, and antibodies fragments so long as they exhibit the desired biological activity.
  • compounds of formula I can be used in combination with standard leukemia therapies, especially in combination with therapies used for the treatment of AML.
  • compounds of formula I can be administered in combination with e.g. farnesyl transferase inhibitors and/or other drugs useful for the treatment of AML, such as Daunorubicin, Adriamycin, Ara-C, VP-16, Teniposide, Mitoxantrone, Idarubicin, Carboplatinum and PKC412.
  • a compound of the formula I may also be used to advantage in combination with known therapeutic processes, e.g., the administration of hormones or especially radiation.
  • a compound of formula I may in particular be used as a radiosensitizer, especially for the treatment of tumors which exhibit poor sensitivity to radiotherapy.
  • ком ⁇ онент there is meant either a fixed combination in one dosage unit form, or a kit of parts for the combined administration where a compound of the formula I and a combi- nation partner may be administered independently at the same time or separately within time intervals that especially allow that the combination partners show a cooperative, e.g. synergistic, effect, or any combination thereof.
  • Preferred compounds of the formula I (which are also preferred for pharmaceutical compositions, methods and uses according to the invention), tautomers and/or salts thereof can be deduced from the dependent claims which are incorporated here by reference.
  • the invention relates especially to compounds of the formula I as given in the examples, tautomers thereof and/or pharmaceutically acceptable salts thereof.
  • the R f values which indicate the ratio of the distance moved by each substance to the distance moved by the eluent front are determined on silica gel thin-layer plates (Merck, Darmstadt, Germany) by thin-layer chromatography using the respective named solvent systems.
  • Hyflo Hyflo Super Cel ® filtering aid based on diatomaceous earth; obtainable from
  • Ph phenyl propylphosphonic anhydride 2,4,6-tripropyl-1 ,3,5,2,4,6-trioxatriphophorinane-2,4,6- trioxide [68957-94-8]; 50 % in DMF R f ratio of fronts (TLC) rt room temperature sat. saturated
  • Anilines used as educts Most respective anilines are either commercially available or described in WO 03/099771 , WO 05/051366 or WO 05/063720 or can be prepared analogously to the therein exemplified
  • the starting material is prepared as follows:
  • Step 1.1 e-Benzyloxy-benzordlisoxazole-S-carboxylic acid ethyl ester
  • Step 1.2 6-Benzyloxy-benzordlisoxazole-3-carboxylic acid (3-trifluoromethyl-phenyl)-amide
  • 99 ⁇ l (0.79 mMol) 3-trifluoromethyl-aniline are dissolved in 14 ml toluene and cooled to 10 °C.
  • Step 1.1 * ⁇ -Triisopropylsilanyloxy-benzordiisoxazole-S-carboxylic acid ethyl ester
  • Step 1.2 * 6-Triisopropylsilanyloxy-benzord1isoxazole-3-carboxylic acid (3-trifluoromethyl- phenvD-amide
  • Step 1.3 * 6-Hydroxy-benzordlisoxazole-3-carboxylic acid (3-trifluoromethyl-phenyl)-amide 5.5 ml of a 1 M solution of Bu 4 NF in THF are added to a solution of 1.045 g (2.18 mMol) 6- triisopropylsilanyloxy-benzotdJisoxazole-S-carboxylic acid (3-trifluoromethyl-phenyl)-amide dissolved in 25 ml THF. After 55 min, the solution is concentrated in vacuo, the residue re- dissolved in water and EtOAc, the aq. layer separated off and extracted twice with EtOAc. The organic layers are washed twice with water and brine, dried (Na 2 SO 4 ) and concentrated. Trituration in hexane gives the title compound.
  • the starting material is prepared as follows:
  • Step 4.1 6-(2-Chloro-pyrimidin-4-yloxy)-benzordlisoxazole-3-carboxylic acid ethyl ester
  • Step 4.2 6-(Pyrimidin-4-yloxy)-benzordlisoxazole-3-carboxylic acid ethyl ester 300 mg (0.938 mMol) 6-(2-chloro-pyrimidin-4-yloxy)-benzo[d]isoxazole-3-carboxylic acid ethyl ester in 3 ml DMF and 262 ⁇ l (1.88 mMol) Et 3 N are hydrogenated in presence of 120 mg Pd/C (10 %; Engelhard 4505). The catalyst is filtered off, the filtrate concentrated, the residue re-dissolved in EtOAc and water, the aq. layer separeted off and extracted with EtOAc.
  • Example 5 ⁇ 4-r3-(3-T ⁇ fluoromethyl-phenylcarbamoyl)-benzordlisoxazol-6-yloxyl-pyrimidin-2- yl)-carbamic acid te/t-butyl ester A & 6-(2-amino-pyrimidin-4-yloxy)-benzord1isoxazole-3- carboxylic acid (3-trifluoromethyl-phenyl)-amide B
  • the starting material is prepared as follows:
  • Step 5.1 6-(2-fe/t-Butoxycarbonylamino-pyrimidin-4-yloxy)-benzordlisoxazole-3-carboxylic acid ethyl ester
  • the starting material is prepared as follows:
  • Step 6.1 6-Methoxy-benzordlisothiazole-3-carboxylic acid (4-fluoro-3-trifluoromethyl-phenyl)- amide
  • Step 6.2 6-Hvdroxy-benzordlisothiazole-3-carboxylic acid (4-fluoro-3-trifluoromethyl-phenyl)- amide
  • Step 6.3 6-(2-Amino-6-chloro-pyrimidin-4-yloxy)-benzordlisothiazole-3-carboxylic acid (4- fluoro-3-trifluoromethyl-phenyl)-amide
  • Example 7 6-(2-Amino-pyrimidin-4-yloxy)-benzordlisothiazole-3-carboxylic acid r4-(4-methyl- piperazin-1-ylmethyl)-3-trifluoromethyl-phenvH-amide
  • the starting material is prepared as follows:
  • Step 7.1 6-Methoxy-benzordlisothiazole-3-carpoxylic acid r4-(4-methyl-piperazin-1-ylmethyl)-
  • Step 7.2 6-Hvdroxy-benzordlisothiazole-3-carboxylic acid r4-(4-methyl-piperazin-1-ylmethyl)-
  • Step 7.3 6-(2-Amino-6-chloro-pyrimidin-4-yloxy)-benzord1isothiazole-3-carboxylic acid [4-(4- methyl-piperazin-1-ylmethyl)-3-trifluoromethyl-phenyll-amide
  • Example 8 (4- ⁇ 3-r4-(4-Methyl-piperazin-1-ylmethyl)-3-trifluoromethyl-phenylcarbamoyll- benzord1isothiazol-6-yloxy)-pyrimidin-2-yl)-carbamic acid methyl ester
  • Step 9.2 Trifluoro-methanesulfonic acid 6-triisopropylsilanyloxy-benzofuran-3-yl ester
  • 22.9 g 74.7 mMol
  • 6-triisopropylsilanyloxy-benzofuran-3-one in 300 ml CH 2 CI 2
  • 19.1 ml 164 mMol
  • 17.6 ml 8.6 ml
  • the mixture is warmed up to 15 °C for 20 min and then concentrated on the rotation-evaporator in vacuo.
  • Step 9.3 6-Triisopropylsilanyloxy-benzofuran-3-carboxylic acid methyl ester
  • Partial concentration of the filtrate gives the crystalline title compound, which is filtered off and washed with ether and hexane: m.p.: 200-201 °C. More product can be isolated from the filtrate by addition of 280 g SiO 2 , concentration, application to a chromatography column (SiO 2 ; hexane/EtOAc 3: 1 ) and eluation with hexane/EtOAc 3:1.
  • Step 9.5 6-(2-Amino-6-chloro-pyrimidin-4-yloxy)-benzofuran-3-carboxylic acid methyl ester
  • a mixture of 6.20 g (32.3 mMol) 6-hydroxy-benzofuran-3-carboxylic acid methyl ester, 8.5 g (51.8 mMol) 2-amino-4,6-dichloropyrimidine and 14.2 g (67 mMol) K 3 PO 4 in 250 ml NMP is stirred for 3.5 h at 60 °C. Then the mixture is poured into 1 I EtOAc and 1 I water, the aq. layer separated off and extracted 3 times with EtOAc.
  • Step 9.6 6-(2-Amino-pyrimidin-4-yloxy)-benzofuran-3-carboxylic acid methyl ester
  • a solution of 9.2 g (28.8 mMol) 6-(2-amino-6-chloro-pyrimidin-4-yloxy)-benzofuran-3- carboxylic acid methyl ester and 23.4 ml (0.29 MoI) pyridine in 1 I THF is hydrogenated in presence of 3.9 g Pd/C 10 % during 5 h.
  • the mixture is filtered through a pad of celite and char coal, the solid washed extensively with THF and MeOH and the filtrate concentrated. The residue is stirred with 400 ml EtOAc and 200 ml water.
  • Example 1 (4- ⁇ 3-r4-(4-Methyl-piperazin-1-ylmethyl)-3-trifluoromethyl-phenylcarbamoyll- benzofuran-6-yloxy)-pyrimidin-2-yl)-carbamic acid methyl ester
  • the starting material is prepared as follows:
  • Step 12.1 3-Methoxy-phenylsulfanyl)-2-oxo-propionic acid ethyl ester
  • Step 12.2 6-Methoxy-benzorblthiophene-3-carboxylic acid ethyl ester 306 g
  • Polyphosphoric acid (Riedel-de-Haen 04101 ) are heated up to 70 °C.
  • 250 ml chlorbenzene are added, followed by a solution of 50.5 g (0.2 MoI) of crude 3-(3-methoxy- phenylsulfanyl)-2-oxo-propionic acid ethyl ester in 280 ml chlorbenzene.
  • the mixture is heated up to 112 °C for 4 h. From the resulting 2-phasic hot mixture, the yellow-brownish upper layer is sucked off.
  • the black lower phase is extracted by 3 portions of 250 ml boiling toluene.
  • the upper layer and the 3 toluene extracts are combined and concentrated in vacuo ( ⁇ crude 1 ).
  • the residue from the black lower phase is hydrolysed in 7 I water. Extraction with 2 portions of CH 2 CI 2 gives more material ( ⁇ crude 2).
  • Both batches (crude 1 & 2) are combined and diluted with CH 2 CI 2 , water and sat. NaHCO 3 .
  • the aq. phase is separed off and extracted twice with CH 2 CI 2 .
  • the organic layers are washed twice with water and brine, dried (Na 2 SO 4 ) and concentrated.
  • Step 12.3 ⁇ -Hydroxy-benzorblthiophene-S-carboxylic acid ethyl ester
  • a solution of 4.72 g (20 mMol) 6-methoxy-benzo[b]thiophene-3-carboxylic acid ethyl ester in 200 ml CH 2 CI 2 at -10 °C 40 ml of a 1 M solution of BBr 3 in CH 2 CI 2 are added via syringe during 12 min. The solution is stirred for 3.5 h at -10 to 0 °C, then diluted with 600 ml EtOAc and poured into 450 ml of a mixture of sat. NaHCO 3 and ice.
  • Step 12.4 6-(2-Amino-6-chloro-pyrimidin-4-yloxy)-benzorblthiophene-3-carboxylic acid ethyl ester
  • Step 12.5 6-(2-Amino-pyrimidin-4-yloxy)-benzorblthiophene-3-carboxylic acid ethyl ester
  • a solution of 3.70 g (10.6 mMol) 6-(2-amino-6-chloro-pyrimidin-4-yloxy)-benzo[b]thiophene-3- carboxylic acid ethyl ester in 300 ml THF and 8.68 ml (108 mMol) pyridine is hydrogenated in presence of 3.0 g Pd/C (10 %; added in 3 portions during 23 h). The mixture is filtered and the solid washed extensively with MeOH. The filter cake still contains product and is therefore stirred in EtOAc and water.
  • Step 15.4 2,4,6-Trimethyl-benzenesulfonate-1 -amino-3-benzyloxy-pyridinium 8.75 g (40.6 mMol) O-Mesitylenesulfonylacetohydroxylamine and 4.2 g (22.7 mMol) 3- benzyloxy-pyridine are dissolved in 70 ml CH 2 CI 2 and stirred for 2 h at rt.
  • Step 15.5 ⁇ -BenzyloxypyrazoloH . ⁇ -alpyridine-S-carboxylic acid methyl ester 3.2 g (8 mMol) 2,4,6-Trimethyl-benzenesulfonate-1-amino-3-benzyloxy-pyridinium are dissolved in 15 ml CHCI 3 and cooled to 0°C. 1.6 g (12 mMol) K 2 CO 3 (puriss>99%, Fluka 60109) and 1.3 ml (16 mMol) methyl propiolate are added and the mixture is stirred at rt for 18 h. It is worked up by filtration and the filtrate is concentrated under reduced pressure.
  • Step 15.6 6-HvdroxypyrazoloH ,5-a1pyridine-3-carboxylic acid methyl ester 101 mg
  • Product from Step 15.5 (0.36 mMol) are dissolved in 5 ml HOAc and treated with 0.31 ml HBr (5.7 M solution in HOAc) at rt.
  • the reaction mixture is stirred for 1 h at 119 °C. It is then cooled to rt again, diluted with EtOAc and H 2 O and the organic layer is separated. The aq.
  • Step 15.8 6-(2-Amino-6-chloro-pyrimidin-4-yloxy)-pyrazolori ,5-a1pyridine-3-carboxylic acid (3-trifluoromethyl-phenyl)-amide 10.5 ⁇ l (0.084 mMol) 3-Trifluoromethyl aniline are dissolved in 2 ml toluene and cooled to 5 °C.
  • Example 16 the following derivatives are obtained analogously to Ex. 15.
  • Example 17 6-(2-Hvdroxymethyl-pyrimidin-4-yloxy)-benzorblthiophene-3-carboxylic acid (3- tert-butyl-phenvD-amide
  • 82 mg (0.55 mMol) 3-tert-butyl- aniline are dissolved in 8 ml toluene and cooled in an ice bath.
  • 825 ⁇ l Me 3 AI (2 M in toluene; 1.65 mMol) are added via syringe.
  • the starting material is prepared as follows: Step 17.1 : 4-Methoxy-pyrimidine-2-carboxylic acid ethyl ester
  • Step 17.5 6-(2-Hexanoyloxymethyl-pyrimidin-4-yloxy)-benzorblthiophene-3-carboxylic acid ethyl ester
  • Example 18 the following derivatives are obtained analogously to Ex. 17.
  • the starting material is prepared as follows:
  • the crude (6-hydroxy-pyrimidin-4-yl)-methanol is diluted with 60 ml CH 2 CI 2 and 20 ml pyridine. Then 9.3 ml (40 mMol) caproic anhydride and 49 mg DMAP are added and the suspension is stirred for 1 h at rt.
  • the reaction mixture is diluted with water and EtOAc, the aq. phase separated off and extracted twice with EtOAc.
  • the organic layers are washed 3 times with water and brine, dried (Na 2 SO 4 ) and concentrated.
  • Example 20 the following derivatives are obtained analogously to Ex. 19.
  • Example 21 6-(6-Benzyloxymethyl-pyrimidin-4-yloxy)-benzofuran-3-carboxylic acid (3- trifluoromethyl-phenvD-amide (0.44 mMol) 3- dissolved in 6 ml ice bath. Then 0.66 1.32 mMol) are h at rt, a solution of 156 mg (0.40 mMol) 6-(6-benzyloxymethyl-pyrimidin-4-yloxy)-benzofuran-3-carboxylic acid methyl ester in 2 ml THF is added and the yellowish solution is stirred for VA h in an oil bath of 110 °C.
  • the starting material is prepared as follows:
  • Step 21.1 6-(6-benzyloxymethyl-pyrimidin-4-yloxy)-benzofuran-3-carboxylic acid methyl ester
  • Example 22 6-(6-Hvdroxymethyl-pyrimidin-4-yloxy)-benzofuran-3-carboxylic acid (3- trifluoromethyl-phenvD-amide
  • a solution of 1 33 m 9 (°- 256 mMol) 6-(6- benzyloxymethyl-pyrimidin-4-yloxy)-benzofuran-3- carboxylic acid (3-trifluoromethyl-phenyl)-amide in 13.3 ml CH 2 CI 2 is cooled in an icebath. 3.3 ml H 3 CSO 3 H are added and stirring is continued for 2.5 h at rt. The solution is poured into a vigorousely stirred mixture of 70 g ice and 70 ml sat.
  • Composition active ingredient 125O g talcum 18O g wheat starch 12O g magnesium stearate 80 g lactose 20 g
  • Preparation process The mentioned substances are pulverised and forced through a sieve of 0.6 mm mesh size. 0.33 g portions of the mixture are introduced into gelatin capsules using a capsule-filling machine.
  • Preparation process The active ingredient is pulverised and suspended in PEG 400 (polyethylene glycol having an M r of from approx. 380 to approx. 420, Fluka, Switzerland) and Tween ® 80 (polyoxyethylene sorbitan monolaurate, Atlas Chem. Ind. Inc., USA, supplied by Fluka, Switzerland) and ground in a wet pulveriser to a particle size of approx. from 1 to 3 ⁇ m. 0.43 g portions of the mixture are then introduced into soft gelatin capsules using a capsule-filling machine.
  • PEG 400 polyethylene glycol having an M r of from approx. 380 to approx. 420, Fluka, Switzerland
  • Tween ® 80 polyoxyethylene sorbitan monolaurate, Atlas Chem. Ind. Inc., USA, supplied by Fluka, Switzerland
  • 0.43 g portions of the mixture are then introduced into soft gelatin capsules using a capsule-filling machine.

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